This document describes the basic configuration of Sendmail, an open source email routing facility that supports mail-transfer (SMTP).

Install

yum install sendmail

Configure Relay Host

vi /etc/mail/sendmail.cf
# “Smart” relay host (may be null)
DSyour.smtp.server

Testing

Install a mail client.

yum install mail

Send a test message.

echo “This is a testing email.” | mail -s Test email@domain.com